Messages - attune

I made a mistake and accidentally deposited BTC straight from my openledger based wallet (so probably without an unique txid - sorry, I am a blockchain beginner, can't explain it better). Of course the deposit got lost. I've written to the support email, but no one has replied to me. Is there any chance I can contact someone who can retrieve the deposit for me? Or do you guys know if it can be done? And how?